Having owned 3 Dethadders (latest one the Chroma version) I'd say that they've all been superb mice. No frills, no issues except one died after 5 years of good use (my fault because I fucked it up cleaning it and putting it back together). If anything I could complain about is the razer software suite has a shit loading time on boot.
But the Chroma is quite nice, with some software perks like it learning the mousepad. DPI is excellent, the buttons all click well and don't overclick, an issue I've had with previous Logitech mice. Actually all my peripherals (kb/mouse) are razer and the cloud profile is a nice feature as well, not necessary but convenient.
Overall price-for-performance is perfect.